emphasise

from WordNet (r) 3.0 (2006)

emphasise
    v 1: give extra weight to (a communication); "Her gesture
         emphasized her words" [syn: {underscore}, {underline},
         {emphasize}, {emphasise}]
    2: to stress, single out as important; "Dr. Jones emphasizes
       exercise in addition to a change in diet" [syn: {stress},
       {emphasize}, {emphasise}, {punctuate}, {accent},
       {accentuate}]

from The Collaborative International Dictionary of English v.0.48

emphasise \em"pha*sise\ v. t.
   To place emphasis on; same as {emphasize}.

   Syn: overemphasize, over-emphasize, overstress.
        [WordNet 1.5]